This is a pair of brake caliper sliding wedges for any model year Fiat 124, X19, 128, and 131 cars. They are used on the front or rear calipers.
This style was supplied on late-model 1984-on cars, with an integral retainer divot. Requires one clip to secure in-place. The longer style ensures straighter travel of the caliper and more even brake pad wear.
Either OE NOS as supplies permit, or clean used units that have been freshly replated in yellow zinc for maximum corrosion resistance.